If you're pacing back and forth outside the Odeon, scratching your arms and muttering: "When is there going to be a new Ice Age movie? Four wasn't nearly enough. I need another one. I need to feed my fanatical addiction to cutesy prehistoric animations with well-known Hollywood names doing the voices." Well, this could be the one, a sort of methadone for die-hard Ice Age fans. Nicolas Cage voices Grug, the brutish yet lovable lunk of a caveman dad who rules his family strictly, keeping them in the cave. Emma Stone voices his teen daughter Eep, who causes Grug serious heartache when she falls for local cave-teen Guy (Ryan Reynolds). It's amiable enough, but it makes The Flintstones look like it was scripted by Karl Popper.